Pulsing of LED Lights with Music

I have connected LED lights in a way that they all glow at the same time with the pulse of music.

I had connected both lights directly to a subwoofer so the current which is going in the wire of woofer is divided and the same current goes to the lights also. The more we increase the volume and bass, the speed of current increases and the lights glow more brightly with the pulse of music. The lights glow with the music beat and rhythm.